giebermann



(No Model.)

3 SheetsSheet 1. R. GIEBERMANN.

FILTER PRESS.

Patented Jan. 20, 1891.

(No Model.)

' 3 Sheets-Sl1eet 2. R. GIEBERMANN.

FILTER PRESS.

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(No Model.)

B. GIEBERMANN.

FILTER PRESS.

Patented Jari. 20, 1891.

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Wolngsfiesl NITE STATES PATENT OFFICE.

RUDOLPH GIEBERMANN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO THE BOUTON FOUNDRY COMPANY, OF SAME PLACE.

FILTER-PRESS.

SPECIFICATION forming part of Letters Patent No. 445,053, dated January 20, 1891.

Application filed May 17, 1890. Serial No.352,254. (No model.)

To (LZZ- whom it may COW/6877b.

Be it known that I, RUDOLPH GIEBERMANN, a citizen of the Ifnited States, residing in the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Filter-Presses, of which the following is a specification.

This invention relates to improvements in filter-presses for expressing and separating the liquid from the solid portion of the material being operated upon, but is more especially designed as an improvement upon the presses heretofore employed for expressing the liquid from the solid portion of distillery-swill for the purpose of converting the same into an article of commerce.

Prior to this invention a series of hollow thin filter-plates have been employed, into each of which the swill has been forced, and

in which the cakes are formed of a necessarily-limited thickness, because of the compression. required and the manner of feed of the swill thereto.

The prime object of this invention is to 2 5 form cakes of any desirable size or thickness and in a -more rapid and effective manner than heretofore.

Another object is to have the cakes formed in frames separate from the filter-plates, but

0 interposed therebetween, whereby the cakes may be removed independent of the filterplates and the latter immediately employed in the formation of new cakes.

A further object is to dispense with the employment of the filter-plates in which to form the cakes and to utilize the same solely as separators and filters for the frames in. which the cakes are formed, whereby the expressing of the liquid from the cake is materially facilitated and the rapidity of the work correspondingly promoted. These objects are attained by the devices illustrated in the accompan ying drawings, in which Figure 1 represents a perspective viewof a filter-press embodying myinvention, showing most of the frames and filter-plates removed; Fig. 2, a central longitudinal vertical section thereof; Fig. 3, a detail sectional elevation of one of the filter-plates with one of the perfo- 5 0 rated plates thereof removed to more clearly disclose the internal construction thereof; Fig. I, a transverse vertical se tion of the same; Fig. 5, a detail perspective view of a removable filli11g-sleeve, and Fig. (5 an enlarged detail section through the support of the distanccframe.

Similar letters of reference indicate the same parts in the several figures of the drawings.

Referring by letter to the accompanying 6o drawings, A B indicate two vertical end frames or standards connected at the center near the bottom by a supporting-rod C and centrally upon each side by guide-rods D, which latter may in turn be strengthened about the center of length thereof by legs or braces E, the whole constituting the main or supporting frame of my machine, upon which all of the operating parts thereof work.

The end or standard A is solid and immov- 7o able, and constitutes the support against which the distance-frames and filter-plates are forced preparatory to filling and expelling the piston-head F, guided by eyes G thereon, sliding upon the rod D, and actuated by the piston-rod II of a hydraulic ram I, (not shown in detail,) guided and supported in a suitable boxing J, formed in the end frame B of the machine.

The construction and operation of the ram form no part of this invention, and I may here state that, if desirable, any other means of compression-such as the common and well-known serew-may be substituted therefor without departing from the spirit of my invention, the ram being preferred, however, on account of the rapidity and effectiveness of its operation.

Between the end frame A. and the piston head is arranged a series of distance'frames on K and filter-plates L, alternating with each other, and of such dimensions as to fit between the guide-bars D, the filter-plates being directly supported upon the bar C, while the distance-frames are supported upon the guide- 9 5 bars by means of rollers M, mounted upon short shafts L ,j0l1l11ELl6(l in suitable brackets O, projecting from the sides of and cast with or otherwise rigidly secured to said frames, these rollers preferably running upon suit- ICO able depressions formed in the upper surface of the guide-bars D, although they may be concaved to fit the bars and accomplish the of a feed-pipe R, leading down from the main.

feeder S,through which the swill in its semiliquid state is forced into the frame. The filter-plates are also open rectangular frames of substantially the same contour and dimensions as the distance-frames, and their upper bar is likewise provided at its center of length with a depending perforated lug T, adapted and arranged to register with the lugs P of the distance-frames, so that when the frames and plates are set side by side, as illustrated in the drawings, alternating with each other, all of the perforations in the lugs of both frames will register with each other, but not form a continuous passage, as the continuity thereof is interrupted at each distance-frame, which, as shown,is provided at the side edges thereof only with the depending lugs. The perforation in the end filter-plate, however, registers with the end of a supplemental feed-pipe U, passing through the end frame A, so that as the swill is forced therein it will pass entirely through the filter-plate, but fall into the distance-frame which is being simultaneously fed through the overhead pipe R until'the frame becomes filled, when it will pass on through the perforation in the next filter-plate and into the next distance-frame, and so on until all of the frames are filled.

Each of the filter-plate frames, as will be more clearly seen by an inspection of Fig. 3, is covered with perforated sheet-metal plates V, or their equivalents, attached to and lying 'flush with each face thereof by means of bolts V or otherwise, so that when the filter-plates are interposed between the distance-frames these perforated plates form a wall for the frames on each side thereof, thus leaving a hollow open space W between each pair of frames, into which the liquid portion of the swill is drained from the cakes formed by the solid portion retained in the distance-frames.

A groove X is formed in the bottom bar of each filter-plate leading to a drain-spout Y, attached to the plate at or near the lower corner thereof, so that the liquid will be drained from the frames and plates as rapidly as expressed.

' As a means for supporting the perforated plates V of the filter-plates I prefer to form the filter-frames in the shape of a gridiron provided with a series of longitudinal ribs a,

extending vertically between the top and bot.- tom bars of the frame and of sufficientlyless width than the frame-bars to permit of the countersinking of the perforated plates flush with the outer faces of said bars. These gridiron-bars, occurring as they do at intervals, serve to prevent the crushing or in ward bending of theperforated plates under the pressure of the solid portions of the swill 1n the distance-frames, furnishing a support at intervals extending over the entire area of the plates, and these bars may obviously be provided either by a casting integral with the outside or rectangular frame of the filterplates or they may be separate pieces set into the frame, as shown in the drawings.

To prevent clogging of the passages through the lugs of the filter-plates connecting tne distance-frames, which may occur with some classes of swill, I prefer to employ a stirrer consisting of a rod b, square, triangular, or other irregular form in cross-section, ournaled at one end in the head F and at the opposite end in a suitable stuffing-box 0 1n the pipe 10, at which latterend it is also provided with a crank-handle (Z for convenience of manipulation, so that whenever the passages become clogged, or at such intervals as may be deemed desirable, a few turns may be given to this stirring-rod, which latter serves to so loosen the swill in the passages that the pressure of the feed will be sufficient to force the swill through and remove the clog. Thus it will be seen that by the employmentof my distance-frames the cakes may be formed of any desirable thickness and without the necessity for changing the size of the filterplates, by which the cakes are effectually separated from each other, and that by reason of the double feed employed cakes of any thickness may be readily and rapidly formed, the overhead feed serving principally to fill the frames, while the supplemental feed serves to both fill the frames and force the overflow into the neXt frame, and thus avoid the possibility ofchoking the passages between the frames through the filter-plates, although it is not absolutely essential that this double feed should be employed.

, In practice, after the frames and filterplates are properly set up in the machine, supported as before described, the pistonhead F is operated so as to force all of the frames tightly together between it and the fixed end A, after which lock-nut a, working upon the guide-bars D, which are screwthreaded near the rear ends thereof for their reception, are turned up so as to lie closely against the eyes G of the piston-head and securely lock it in position, after which the pressure of the ram may be released, or, if desired, where a lesser number of frames and plates are employed, a removable fillingsleeve 2) may be employed, slotted on one side, so as to fit on the guide-bars and thus avoid the necessity for running the nuts a considerable distance back and forth upon the bars with each change in the number of frames and plates. The swill is then fed into the frames, preferably under suitable pressure, until all of the frames are completely filled, after which the frames maybe removed bodily from the machine or the cakes removed separately from the frames and the latterimmediately prepared for another operation; but in no case, whether the frames are removed or not, need the filter-plates be re moved, and obviously any number of frames and plates may be employed in a single operation, from one to the full capacity of the machine.

In conclusion I may state that between the feed-pipes R and the distance-frames there is a detachable connection of some suitable character not necessary to be either shown or described, which enables the ready removal of the frames from the machine.

Having described my invention, what I claim, and desire to secure by Letters Patent, is-

In a filter-press, the combination, with a series of filter-plates provided with perforations in the top bar thereof, of a series of distance-frames interposed between and alternating with said plates, the upper bars of which are provided with perforations opening into the interior of said frames and registering with the perforations of said plates, and a feed-pipe registering with the perforation in the end filter-plate, substantially as described.

2. In a filter-press, the eombinatiomwith a series of filter-plates provided with perforations in the top bar thereof, of a series of distance-frames interposed between and alternating with said plates, the upper bars of which are provided with perforations opening into the interior of said frames and reg istering with the perforations of said filterplates a feed-pipe registering, with the perforations in the end filter-plate, and a stirrer working through said feed-pipe and the per forations in said plates and frames, substantially as described.

In afilter-press, the combination, with a series of filter-plates the top bar of each of which is perforated at the center of length thereof, of a series of distance-frames alternating with said plates, the top bar of each of which at the center of length is provided with vertical and horizontal perforations opening into the interior of said frames, the latter registering with the perforations in said plates, feed-pipes leading" to each of said vertical perforations, and a supplemental feed-pipe registering with the perforation in the end filterplate, substantially as described.

RUDOLPH GIEBERMANN.

Witnesses:

R. C. OMOHUNDRO, A MILO BENNETT. 

